 鲜花( 53)  鸡蛋( 0)
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5# manyu
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% w6 [" o- h& ^5 Y- o9 _找回以前的貼子,對我來說也不容易,還是簡單再說一遍好了 Possible causes are:7 v8 a+ ^8 T/ K
1. sub floor did not hold tight to the floor joists. Screws are doing better than nails for this purpose.
# e- y% G% J/ ? q1 t2. supporting beams are a bit too far away from each other.$ M: N p3 u k- k) y8 K
3. supporting beams are not level due to earth settlement.
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, K4 C/ b+ I; h6 S NFor 2, you may need someone with engineering knowledge to find out, but there should be a building code governing the span distance. For 3, you can go down the basement to do a visual check yourself.
: d: q1 V2 G2 m. VBut anyway, insist the builder to fix the problem right away, don't let them get away with 6 months time. |
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